Robinair 342000 Refrigerant Service Solution - Manual (Page 18)

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© 1999 Robinair, SPX Corporation
Operating Instructions
RECOVERING REFRIGERANT
Recovery speed and accuracy is highly dependent on underhood temperature
and air flow across components. Cold refrigerant can pool in the accumulator,
evaporator or condenser and will continue to increase system pressures even
after the recovery process has ended. For maximum recovery speed and accu-
racy, bring the engine to operating temperature prior to recovering refrigerant.
Run the heater on maximum temperature, maximum blower and recirculate.
DO NOT run the A/C system as excessive oil loss will result.
NOTE: There must be 25 psi in the system to recover refrigerant. If there is
not sufficient pressure, you will be prompted to evacuate the system. This step
prevents inadvertent recovery of air or other contaminants from a leaking system.
Use the following steps to recover refrigerant:
1. Be sure the vehicle engine is OFF.
2. From the MAIN MENU, press the RECOVER key or the SCROLL
MENU key to move to the screen showing the RECOVER key.
3. Follow the on-screen prompts to connect the service hoses to the vehicle
and open the service couplers, if they are not already connected.
4. Empty the 342000 oil drain bottle before starting the recovery process.
5. Press the START key to begin the recovery process.
6. If sufficient pressure is detected, the 342000 tests the vehicle system to
determine the purity of the refrigerant in the vehicle system. If the purity
is sufficient, recovery begins. If the refrigerant is contaminated, see page
12, “Vehicles with Contaminated Refrigerant.”
7. Before and immediately after recovery, the 342000 will, if necessary, go
into a clearing mode. This mode clears all refrigerant from hoses and
internal components into the tank to provide maximum recovery accuracy.
8. When the system has been recovered to a vacuum of 9" Hg, the recovery
process stops automatically. Several things occur at this time:
• The red indicator light flashes and the beeper sounds at completion.
• The display reads RECOVER COMPLETE and shows the weight of
the recovered refrigerant.
• System oil is automatically drained into the oil drain bottle.
NOTE: The unit will not go to any other function until the oil is fully drained.
9. You now have the following options:
• Proceed with evacuation or repairs, if needed.
• Press the RESTART RECOVERY key to remove any additional
refrigerant which may have vaporized in the system.
IMPORTANT:
Press PAUSE
to stop
recovery at
any time.
IMPORTANT: If
you operate the
engine during
recovery, see
warnings at the
front of this
manual and
take extreme
care to avoid
moving parts.